As any fule kno, in a fall on an outstretched hand with the elbow extended and the forearm supinated, an injury can be caused as the resulting valgus force compresses the capitellum against the radial head.
This is the type of "radial neck" elbow injury the sawbones has diagnosed for the Bomber. It is not a fracture, but three or four weeks off rugby are prescribed.
He's going skiing in five weeks over half term with the school, so I think he ought to sit out the fray until he comes back from Austria.
Whether he heeds my advice remains to be seen.